Homepage not indexed

I made a site last year with a few articles. I do not update it that much and the site hardly gets any traffic.

Today I checked and found that homepage is no longer indexed. It is not even in Google's cache. All of the internal pages are indexed though.

I tried to get it indexed again with search console but it is still not indexed...

Any ideas?

Try searching "site:yourdomain. com" on Google and see.

You must have been deindexed by google for some reason.